Specification

Release date: 9 Jul 2026
Source:OpenRouter public model & pricing listingT2observed 44 min agomedium
Openness: proprietary
Source:OpenAI Platform docsT1observed 1 h agohigh
Context window: 1.05M tokens
Source:OpenAI Platform docsT1observed 1 h agohigh
Max output: 128K tokens
Source:OpenAI Platform docsT1observed 1 h agohigh
Knowledge cutoff: Feb 2026
Source:OpenAI Platform docsT1observed 1 h agohigh
Modalities: image, text
Source:OpenAI Platform docsT1observed 1 h agohigh
Input modalities: text, image
Source:OpenAI Platform docsT1observed 1 h agohigh
Output modalities: text
Source:OpenAI Platform docsT1observed 1 h agohigh
Tokenizer: GPT
Source:OpenRouter public model & pricing listingT2observed 44 min agomedium
API model id: gpt-5.6-terra
Source:OpenAI Platform docsT1observed 1 h agohigh
Official page: developers.openai.com/api/docs/models/gpt-5.6-terra
Source:OpenAI Platform docsT1observed 1 h agohigh
Capabilities: streaming, structured_outputs, function_calling, file_search, image_input, web_search, prompt_caching
Source:OpenAI Platform docsT1observed 1 h agohigh
Default snapshot: gpt-5.6-terra
Source:OpenAI Platform docsT1observed 1 h agohigh
File input: Yes
Source:OpenRouter public model & pricing listingT2observed 44 min agomedium
Openrouter id: openai/gpt-5.6-terra
Source:OpenRouter public model & pricing listingT2observed 44 min agomedium
Snapshots: gpt-5.6-terra
Source:OpenAI Platform docsT1observed 1 h agohigh
Supported parameters: include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, tool_choice, tools
Source:OpenRouter public model & pricing listingT2observed 44 min agomedium

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

23

Source tiers

T1T217 / 6

Freshest observation

44 min ago

Conflicts

1 flagged

Modalities

Modalities: imagetext
Input: textimage
Output: text

Capabilities

Tool calling
Yes
OpenAI Platform docs · T1
Structured output
Yes
OpenAI Platform docs · T1
Reasoning
Yes
OpenRouter public model & pricing listing · T2
Vision
Yes
OpenAI Platform docs · T1
Audio
Unavailable
Fine-tuning available
No
OpenAI Platform docs · T1

Context window: 1.05M tokens
Source:OpenAI Platform docsT1observed 1 h agohigh
Max output: 128K tokens
Source:OpenAI Platform docsT1observed 1 h agohigh
Knowledge cutoff: Feb 2026
Source:OpenAI Platform docsT1observed 1 h agohigh
Tokenizer: GPT
Source:OpenRouter public model & pricing listingT2observed 44 min agomedium

No benchmark results recorded

Results appear when a tier 1–3 source publishes them; we never copy scores without a source.

Current prices

Current prices per 1M tokens
Provider	Input / 1M	Output / 1M	Cached in	Batch in / out	Context	Observed	Source
OpenAI APIopenai/gpt-5.6-terra:batch	$1	$6	$0.10	—	1.05M	44 min ago	openrouter.aiT2
OpenAI APIgpt-5.6-terra	$2	$12	$0.20	$1 / $6	—	1 h ago	developers.openai.comT1
OpenAI APIopenai/gpt-5.6-terra	$2	$12	$0.20	—	1.05M	44 min ago	openrouter.aiT2

USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.

Available through 1

OpenAI API

Price history

Input price · USD / 1M tokens

Output price · USD / 1M tokens

OpenAI API

No hardware estimate available

Estimates need a parameter count; this model has none recorded from a source.

No lineage recorded

Lineage comes from explicit `derived_from`, `fine_tuned_from`, `distilled_from` and `quantized_from` relations stated by sources.

Papers 0

No papers linked yet.

Repositories 0

No repositories linked yet.

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history

24 claims · 23 properties1 conflicting

Release daterelease_date1

Claim history for Release date
Value	Valid from → to	Status	Source	Confidence	Extractor
9 Jul 2026	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Opennessopenness1

Claim history for Openness
Value	Valid from → to	Status	Source	Confidence	Extractor
proprietary	11 Sept 2026 20:51 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Context windowcontext_length1

Claim history for Context window
Value	Valid from → to	Status	Source	Confidence	Extractor
1.05M tokens	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Max outputmax_output_tokens1

Claim history for Max output
Value	Valid from → to	Status	Source	Confidence	Extractor
128K tokens	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Knowledge cutoffknowledge_cutoff1

Claim history for Knowledge cutoff
Value	Valid from → to	Status	Source	Confidence	Extractor
Feb 2026	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Modalitiesmodalities1

Claim history for Modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
image, text	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Input modalitiesmodalities_input2conflicting claims

Claim history for Input modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
image, text	11 Sept 2026 21:10 UTC → current	conflicting	OpenRouter public model & pricing listingT2	medium	deterministic
text, image	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	conflicted	deterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Tokenizertokenizer1

Claim history for Tokenizer
Value	Valid from → to	Status	Source	Confidence	Extractor
GPT	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

API model idapi_model_id1

Claim history for API model id
Value	Valid from → to	Status	Source	Confidence	Extractor
gpt-5.6-terra	11 Sept 2026 20:51 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Official pageofficial_url1

Claim history for Official page
Value	Valid from → to	Status	Source	Confidence	Extractor
https://developers.openai.com/api/docs/models/gpt-5.6-terra	11 Sept 2026 20:51 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Capabilitiescapabilities1

Claim history for Capabilities
Value	Valid from → to	Status	Source	Confidence	Extractor
streaming, structured_outputs, function_calling, file_search, image_input, web_search, prompt_caching	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Default snapshotdefault_snapshot1

Claim history for Default snapshot
Value	Valid from → to	Status	Source	Confidence	Extractor
gpt-5.6-terra	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Descriptiondescription1

Claim history for Description
Value	Valid from → to	Status	Source	Confidence	Extractor
GPT-5.6 model that balances intelligence and cost	11 Sept 2026 20:51 UTC → current	current	OpenAI Platform docsT1	high	deterministic

File inputfile_input1

Claim history for File input
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Fine-tuning availablefine_tuning_available1

Claim history for Fine-tuning available
Value	Valid from → to	Status	Source	Confidence	Extractor
No	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
Value	Valid from → to	Status	Source	Confidence	Extractor
openai/gpt-5.6-terra	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Reasoningreasoning1

Claim history for Reasoning
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Snapshotssnapshots1

Claim history for Snapshots
Value	Valid from → to	Status	Source	Confidence	Extractor
gpt-5.6-terra	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Structured outputstructured_output1

Claim history for Structured output
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
Value	Valid from → to	Status	Source	Confidence	Extractor
include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, tool_choice, tools	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tool callingtool_calling1

Claim history for Tool calling
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Visionvision1

Claim history for Vision
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 20:52 UTC → current	current	OpenAI Platform docsT1	high	deterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

11 Sept 2026
Listed by providerModelgpt-5.6-terraOpenAI
OpenAI API lists gpt-5.6-terra at $1 in / $6 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelgpt-5.6-terraOpenAI
OpenAI API lists gpt-5.6-terra at $2 in / $12 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
New modelModelgpt-5.6-terraOpenAI
New model: gpt-5.6-terra (OpenAI)
openai
developers.openai.com
11 Sept 2026
Listed by providerModelgpt-5.6-terraOpenAI
OpenAI API lists gpt-5.6-terra at $2 in / $12 out per 1M tokens
openai
developers.openai.com

Full timeline →

Source documents
Source	Document	Type	Tier	Last observed	Snapshots
OpenAI Platform docs	developers.openai.com/api/docs/deprecations.md	model_docs	T1· Official	52 min ago	1
OpenAI Platform docs	developers.openai.com/api/docs/pricing.md	pricing	T1· Official	52 min ago	1
OpenAI Platform docs	developers.openai.com/api/docs/models.md	model_docs	T1· Official	52 min ago	1
OpenAI Platform docs	developers.openai.com/api/docs/models/gpt-5.6-terra.md	model_page	T1· Official	1 h ago	1
OpenRouter public model & pricing listing	openrouter.ai/api/v1/models	catalogue	T2· Quality secondary	44 min ago	1

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.